448 INDEX
Cauchy-Schwarz inequality: 13.11
Cauchy's determinant: 13.11, prob. 6
Cay ley transform of a hermit ian operator:
15.13
Centralizer of a subset of a group: 12.8
Chacon-Ornstein ergodic theorem: 13.17,

prob. 5
Chaotic topology: 12.1
Character of an algebra: 15.3
Characteristic function of a set: 12.7
Choquet's theorem: 13.10, prob. 8
ChristofTel-Darboux formula: 15.13, prob. 3
Closed convex hull: 12.14, prob. 13
Closed graph theorem: 12.16
Closed unbounded operator: 15.12
Closure of an unbounded operator: 15.12
Coarser covering: 12.6
Coarser partition: 13.9, prob. 7
Coarser topology: 12.1
Compact space: 12.2 and 12.3, prob. 6
Comparable topologies, 12.1
Compatible (topology and group structure):

12.8
Compatible (topology and vector space

structure): 12.13
Complete additivity: 13.8
Complete maximum principle: 13.13,

prob. 2
Complex measure: 13.1
Compressible mapping: 13.9, prob. 11
Condensation of singularities: 12.16, prob.

14
Conjugacy: 15.13, prob. 7
Conjugate of a complex measure: 13.2
Conjugate mappings preserving a measure:

13.12, prob. 11
Continued fraction: 13.14, prob. 4
Continuous almost everywhere: 13.9,

prob. 6
Convergence in mean, in square mean: 13.11
Convergence in measure: 13.2, prob. 2
Convergents to a continued fraction: 13.14,

prob. 4
Convex hull: 12.14, prob. 13
Convolution of a measure and a function-

14.8
Convolution of two measures: 14.5
Convolvable function and measure: 14.8
Convolvable functions: 14.10
Convolvable measures: 14.5

Cotlar's lemma: 15.4, prob. 16
Covering (G-): 14.1, prob. 6

Defect of an unbounded hermitian operator:
15.13

Defined almost everywhere: 13.6
Dense point, with respect to a measure-
preserving transformation: 13.11, prob.
11.

Density with respect to a measure: 13.1 and
13.13

Differentiation under the integral sign: 13.8
Diffuse measure: 13.18
Dirac measure: 13.1
Directed set of seminorms: 12.14
Dirichlet algebra: 15.3, prob. 9
Dirichlet series: 12.7, prob. 9
Discrete topology: 12.1
Disjoint measures: 13.18
Domain of an unbounded operator: 15.12
Dominated convergence theorem: 13.8
Dual of a locally convex space: 12.15
Dunford-Schwartz ergodic theorem: 13.21,
prob. 20

Egoroff's theorem: 13.9
Elementary set: 12.5
Entropy: 13.9, probs. 27, 28
Equi-integrable set: 13.12, prob. 4
Equirepartitioned sequence: 13.4, prob. 7
Equivalent functions: 13.6
Equivalent measures: 13.15
Equivalent representations: 15.5
Equivalent seminorms: 12.14
Ergodic mapping, measure: 13.9, prob. 13
Ergodic point, with respect to a measure-
preserving transformation: 13.11, prob.
11

Ergodic set: 13.11, prob. 11
Essential spectrum: 15.13, prob. 11
Essential subspace: 15.5
Essentially bounded function: 13.12
Essentially self-adjoint unbounded oper-
ator: 15.13

Exterior function: 15.3, prob. 12
Extremal point: 12.15, prob. 5